447045830921 has 2 divisors, whose sum is σ = 447045830922. Its totient is φ = 447045830920.

The previous prime is 447045830873. The next prime is 447045830927. The reversal of 447045830921 is 129038540744.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 250836698896 + 196209132025 = 500836^2 + 442955^2 .

It is a cyclic number.

It is not a de Polignac number, because 447045830921 - 2²² = 447041636617 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (447045830927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 223522915460 + 223522915461.

It is an arithmetic number, because the mean of its divisors is an integer number (223522915461).

Almost surely, 2^447045830921 is an apocalyptic number.

It is an amenable number.

447045830921 is a deficient number, since it is larger than the sum of its proper divisors (1).

447045830921 is an equidigital number, since it uses as much as digits as its factorization.

447045830921 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 967680, while the sum is 47.

The spelling of 447045830921 in words is "four hundred forty-seven billion, forty-five million, eight hundred thirty thousand, nine hundred twenty-one".